Mariner 20hp engine EFi (outboard, short or long, 4-stroke) F20MH

New EFi model - The largest of the Mariner portables, with twenty horsepower this outboard has as much power as you can get without going heavy. Ideal for larger inflatables and RIBs
With shipment Courier for £27.50
£2,349.99 (inc. VAT)
VAT Content: £391.67

 Now the range starts to get fun .... with twenty horsepower this engine has enough grunt to be a lot of fun on a larger inflatable or rib, or the long shaft model makes an excellent workhorse for those with more practical uses in mind. As the largest of the portable engines this offers the most power whilst not having to be a bodybuilder to move it around.

This is the brand new model in the range, the biggest change being Electronic fuel injection rather than carburettor. This gives sharper throttle response and improved fuel economy, bringing this model bang up to date with environmental and technological standards.

  • Short shaft = £2349.99 inc
  • Long shaft = £2349.99 inc


  • Model F20MH or 20MLH
  • Power: 20hp output (max 14.7kw)
  • Shaft length: Short (to suit transom height of 381mm)
  • Shaft length: Long (to suit transom height of 508mm)
  • Twin cylinder
  • Four stroke 2-valve single overhead cam
  • Manual start
  • Tiller control with throttle
  • Forward-Neutral-Reverse gears
  • Cooling: Water cooled
  • 12L external fuel tank (supplied with the engine)
  • 5 trim positions
  • Weight: 46.7kg Short and 48.5kg Long
  • 5 year leisure use warranty (subject to servicing)


  • Multi-function tiller handle
  • Electronic fuel injection
  • Exclusive fuel primer and fast idle system for easy starting
  • New lighter design than the old model

More pictures

How do I order one?

How do I order one?

As one of Cambridgeshire's authorised Mariner dealers we are able to offer full sales, service and repair facilities for their range of outboard engines. You can buy one from us in three ways:

  1. Order through the website. Upon receipt of your order we will call you to discuss your requirements, answer any questions you may have and organise delivery. Or
  2. You can call us on 01353 663095 or 01353 640008 to place an order and one of our trained staff will be able to answer any questions you may have, take secure payment and organise delivery. Or
  3. Come in and see us, we are a real shop and would of course be very happy to deal with you in person (details of how to find us can be found on our contact-us page).

How is it delivered?

How is it delivered?

If you are mailordering a Mariner 20hp outboard from us then you can rest assured that we aim to offer the highest level of service so that you are delighted with your purchase.

All our engines go through a PDI (pre-delivery-inspection) prior to being shipped. This ensures that all settings and functionality are exactly to Barrus' specifications when you receive the engine.

After PDI we drain the oil and fuel, re-box the engine and then send it out via a courier or pallet courier depending upon the model. We will call you to confirm when the engine is leaving us and when you should expect it to arrive with you.

We register your purchase with Barrus (for warranty purposes).

Upon receipt of the engine you will need to replace the sump oil prior to running it. It is correct that the correct grade of oil is used, use of the incorrect oil may damage the engine and invalidate your warranty. If you would like us to supply a tub of oil with the engine then just let us know and we can send it out at the same time.

If at any point you have any questions or concerns once you have received your engine then please feel free to give us a call and we will happily talk you through it - we are here to help



21 Waterside, Ely, Cambridge, CB7 4AU


01353 663 095
01353 640 008

Opening Hours:
Monday  9am-5pm (web only)
Tues - Fri  9am-5pm
Saturday  10am - 2pm
Closed on a Sunday


We are a real walk in the door shop, staffed by real boaters, if you want to talk to us about any of the products on this site (or any other of your chandlery needs) then please feel free to give us a call

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